Motion Control Servo Couplings

Our broad selection of servo couplings for motion control includes:

• Bellows Couplings: The most torsionally stiff coupling, ideal for highly dynamic servo applications while still compensating for shaft misalignments.
• Elastomer Couplings: Provide vibration dampening along with shaft misalignment compensation for smoother operation.
• Distance Couplings: Line shaft couplings that span up to 20 ft without additional external bearings.
• Safety Couplings: Provide mechanical crash protection with single-position reset to safeguard your equipment and reduce repair costs.

With four types of servo couplings available in many configurations, GAM is your complete source for motion control servo couplings. 

OEMs across aerospace, packaging, robotics, semiconductor, and medical industries rely on GAM because we solve application challenges, not just ship parts. Our engineers work directly with your team to size and select the right coupling for your specific drive system. Each component is custom bored to customer specifications with an optional keyway to ensure an exact fit.

Most servo couplings ship within 5 days, and our Express Service delivers within 24 hours for breakdown situations. 

Flexible U.S. manufacturing and a nationwide network of sales engineers give OEMs the speed, precision, and technical support that offshore suppliers cannot match.

What is a servo coupling, and how does it differ from a standard coupling?

A coupling connects two shafts in a drive train, such as a motor to a gearbox. A servo coupling is built specifically for motion control systems that demand positioning accuracy and high responsiveness. Servo couplings feature zero-backlash construction, low moment of inertia, compensation for shaft misalignment, and high torsional stiffness, allowing them to transmit torque with virtually no lost motion.

How do I choose between a bellows coupling and an elastomer coupling?

Bellows couplings offer the highest torsional stiffness and excel in highly dynamic motion control applications that demand maximum responsiveness and positional accuracy. Elastomer couplings introduce vibration dampening, making them the stronger choice when your system needs to absorb shock loads or reduce resonance. Download our Bellows vs. Elastomer Reference Guide for a detailed side-by-side comparison.

Can GAM provide custom servo couplings for OEM applications?

Yes. GAM's flexible U.S. manufacturing capabilities allow us to modify standard servo couplings or develop fully custom-designed couplings to meet exact specifications, including custom bore sizes, keyways, special materials, and unique form factors.